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Surface modified solid particles, preparation method and application thereof

A solid particle and surface modification technology, which is applied in the petroleum industry, additives, dyeing and low-molecular organic compound treatment, etc., can solve problems affecting the use effect, achieve uniform dispersion, increase the relative volume, and expand the use range.

Active Publication Date: 2008-06-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for some lubricating grease, when its cone penetration is required to be large, when adding heavier solid additives, such as molybdenum disulfide powder, its specific gravity is 4.8-5.0, while the specific gravity of lubricating grease is 0.8-0.9, therefore, As the storage time prolongs, the additive will gradually sink to the bottom of the container, while the oil will float on the top of the container, affecting the use effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] With 100g of 500SN as the base oil, put 20g of colloidal graphite in the reaction kettle, stir rapidly for 20 minutes, then add 4.8g of molten 2,4'-tolyl diisocyanate, 10.2g of dodecylamine, stir for 30 minutes, gradually Raise the temperature to 80°C and react for 2 hours to obtain a white powder product.

Embodiment 2

[0019] With 100g of polyalphaolefin as the base oil, 35g of carbon black was placed in the reactor, stirred rapidly for 20 minutes, then added 4.8g of 4,4'-diphenylmethane diisocyanate in molten state, 7.2g of dodecylamine, Stir for 40 minutes, gradually raise the temperature to 90° C., and react for 3 hours to obtain a white powder product.

Embodiment 3

[0021] With 100g of 150BS as the base oil, put 60g of molybdenum disulfide in the reaction kettle, stir rapidly for 20 minutes, then add 8.1g of 4,4'-diphenylmethane diisocyanate in molten state, 10.2g of dodecylamine, and stir for 40 minutes , gradually raised the temperature to 100°C, and reacted for 2 hours to obtain a white powdery product.

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PUM

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Abstract

The invention relates to a surface modified solid particle, which comprises wall material and core material, wherein, the wall material is uramido compound generated from the reaction of diisocyanate and organic amine; the core material is solid additive powder; the weight proportion of the wall material and the core material is 0.1:1- 10:1; the diameter of the solid particle is 0.2-5 Mum. Surface modification processing for the solid additive powder is carried out in the invention to lead the proportion thereof to be lightened and the color to be whitened, without changing the inherent performance of the solid additive powder. The modified solid additive powder is used for lubricating grease, which can keep not only the inherent efficacy of the additive, but also the color of the lubricating grease.

Description

technical field [0001] The invention relates to a surface-modified solid particle, a preparation method and application thereof. Background technique [0002] Grease is composed of base oil, thickener and additives. Among them, additives are divided into solid and liquid additives. Solid additives generally include molybdenum disulfide, mica powder, asbestos powder, calcium carbonate, barium carbonate, etc. When preparing lubricating grease in the prior art, the base grease is generally prepared first, and then various additives are added when the refining temperature drops below 100°C. When the additive is a colored solid powder, the color of the base grease will show the color of the additive as the additive is added. For some occasions with strict color requirements, the change of grease color will limit its application range. [0003] In order for these solid additives to be more effective, some surface treatment is required. For example, CN1468945 discloses a prepa...

Claims

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Application Information

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IPC IPC(8): C09C3/08C10M159/12C10M135/18C10M125/00
Inventor 孙洪伟刘大军龙军姚智勤康茵吕伟王金凤杨玮
Owner CHINA PETROLEUM & CHEM CORP
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